Hey Guys,

I've searched around on this forum for a possible solution to this issue and it seems to have gone cold.

The other day I was driving home and the rear passenger door ajar light came on, and went off intermittently. By the time I got home it had stayed on. I've done the following troubleshooting;

a) I've ensured the door rubber ring hits the sensor
b) I have depressed the sensor and the light will not come off on vehicle. Replaced sensor and still getting the same issue
c) I've switched the sensors around on the passenger doors (drivers to passengers and vice versa) and nothing seems to be working.

My alarm keeps going off, and I don't understand what could be possible issue. Any insight into this would be great guys. I've parked my TL in the garage unlocked to avoid my alarm going crazy.

Thanks again.

 

You probably need to adjust the striker on the door as it isn’t keeping the door closed with enough pressure

 

Hey Thoiboi. Thanks for the reply. The door as barely any play when i push on it from the outside. Even holding the sensor in as had as I can, doesn't make the car recognize it. The striker to be clear is that circular rubber donut on the door that hits the sensor when the door is closed?

 

Try sitting inside with the door closed and push out, does it exhibit the same behavior?

 

is the door ajar happening on the same door? You said you replaced the sensor, did you use an OEM sensor? Did the wires on the connector for the sensor look good?

 

it doesnt change my guy. it just keeps saying the door is open. freakin anomaly i tell ya

 

yes i used an OEM sensor. The sensor wires looked the same as the other side, nothing out of the ordinary.

 

sounds like potentially the wire on the other side of the sensor may be broken.. has there been an accident on that side of the car at all?

 

according to the Service manual, that should have 0v when open and 5v when the door is closed on the switch. That switch connects directly to the driver side fusebox (MICU/Multiplex integrated circuit unit) with a green/yellow wire. The issue is that wire or the issue is the MICU.

 

moisture in the MICU possibly. windshield replaced recently or heavy rain?

 

Hey guys! I didn't abandon this thread. I've got the infamous COVID19...I'll come back to all this when I feel better.

 

feel better dude!

 

Hey guys,

I survived this dumb virus...it mangled me. Im 100%
And to my luck the door ajar failure seems to have had some pity on me and went away. When it gets a little warmer here in canada i will check the fuse box below the drivers side steering wheel.

Thanks again for all your help!
happy new year